Geographic location |
-114.995833, 39.256944
114°
59'
45"
W,
39°
15'
25"
N
White Pine county,
NV
Ruth
1:24,000 scale map quadrangle
Accurate to within 1 minute (~1 mile)
NW1/4 NE1/4 SEC. 16, T16N, R62E, DRILL CORE FROM LIBERTY OPEN-PIT COPPER MINE NEAR RUTH , ROBINSON MINING DISTRICT
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Source of sample | Core or cutting |
Rock name | Monzonite |
Description | LIBERTY PIT STOCK. PORPHYRITIC MONZONITE COMPOSED OF ORTHOCLASE, PLAGIOCLASE, QUARTZ AND HORNBLENDE (MANY SMALL INCLUSIONS) PHENOCRYSTS IN A GROUNDMASS OF ORTHOCLASE, QUARTZ, AND BIOTITE (SUBORDINATE TO HORNBLENDE AND OCCASIONALLY CHLORITIC. |
Laboratories | Lamont (Columbia University) |
Compiler name | Marvin, R.F. |
Date compiled | 1975 10 |
Precision of location | Accurate to within 1 minute (~1 mile) |
Location comment | NW1/4 NE1/4 SEC. 16, T16N, R62E, DRILL CORE FROM LIBERTY OPEN-PIT COPPER MINE NEAR RUTH , ROBINSON MINING DISTRICT |
Bibliographic reference | Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16. |
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Geologic map unit | -114.995833, 39.256944 |
Nearby scientific data | Find additional scientific data near this location |
Age estimate | 116.84 ± 3Ma age of intrusion
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Type of analysis | conventional K-Ar |
Rock or mineral analyzed | biotite BIOTITE SEPARATE WITH 5% HORNBLENDE
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Analytical details | |
Lab sample ID | L-962 |
Decay constants | 4.72E-04, 0.585E-04, 1.19E-04* |
K2O concentration | 6.445 % |
Radiogenic 40Ar concentration | 11.2 |
Radiogenic Ar | 91 % |
Comments | THIS ANALYSIS ALSO REPORTED IN MCDOWELL AND KULP (1967) |
Age estimate | 109.4 ± 3Ma age of intrusion
|
Type of analysis | conventional K-Ar |
Rock or mineral analyzed | hornblende 100% HORNBLENDE SEPARATE
|
Analytical details | |
Lab sample ID | L-962 |
Decay constants | 4.72E-04, 0.585E-04, 1.19E-04* |
K2O concentration | 1.01 % |
Radiogenic 40Ar concentration | 1.64 |
Radiogenic Ar | 90 % |
Comments | THIS ANALYSIS ALSO REPORTED IN MCDOWELL AND KULP (1967) |